Scratch blue saltglaze loving cup made in Staffordshire mid 18th century period

A rare Scratch-Blue decorated saltglaze loving cup with incised images of flowers and foliage. Made in Staffordshire in the mid 18th century. The unglazed underside of the base has an inscription in script with the names " Walter Emery and Hannah Simpson," they were most likely gifted or commissioned the piece all those years ago.